Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Sunday, August 23, 2026
The tide is currently falling in Petersburg, AK.
Next low tide : in 3h 56m at 5:12 pm (6.1 ft)
Next high tide : 11:02 pm (13.6 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:37 am
Moon phase : Waxing Gibbous (83% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Apr 1914

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:3315.03:3811.89:261.59:055.24:225:29First Quarter1Wed
2Thu3:1214.24:4110.810:212.29:566.14:195:31First Quarter2Thu
3Fri4:1013.46:1010.511:372.711:206.74:165:33First Quarter3Fri
4Sat5:3712.87:4011.11:042.44:145:35First Quarter4Sat
5Sun7:1313.18:4312.51:116.32:161.64:115:38Waxing Gibbous5Sun
6Mon8:3014.19:2914.22:344.83:120.54:085:40Waxing Gibbous6Mon
7Tue9:3115.410:0915.93:332.73:58-0.54:055:42Waxing Gibbous7Tue
8Wed10:2316.510:4817.54:220.64:40-1.14:035:44Waxing Gibbous8Wed
9Thu11:1217.311:2618.85:07-1.35:21-1.34:005:46Full Moon9Thu
10Fri12:0017.65:51-2.86:01-1.03:575:48Full Moon10Fri
11Sat12:0419.512:4617.46:34-3.66:41-0.33:555:50Full Moon11Sat
12Sun12:4319.71:3316.77:18-3.77:220.83:525:52Waning Gibbous12Sun
13Mon1:2419.22:2215.68:04-3.18:062.13:505:54Waning Gibbous13Mon
14Tue2:0718.13:1414.28:53-1.98:533.53:475:56Waning Gibbous14Tue
15Wed2:5416.64:1612.99:49-0.49:504.83:445:59Third Quarter15Wed
16Thu3:5014.95:3211.910:551.111:065.83:426:01Third Quarter16Thu
17Fri5:0213.46:5911.812:152.03:396:03Third Quarter17Fri
18Sat6:3312.58:1312.412:435.91:362.23:376:05Third Quarter18Sat
19Sun7:5712.69:0513.22:105.02:402.13:346:07Waning Crescent19Sun
20Mon9:0113.09:4514.13:113.83:281.83:316:09Waning Crescent20Mon
21Tue9:5113.510:1714.83:572.54:061.63:296:11Waning Crescent21Tue
22Wed10:3214.010:4615.54:341.34:391.63:266:13Waning Crescent22Wed
23Thu11:0914.411:1316.05:080.35:091.73:246:15New Moon23Thu
24Fri11:4414.611:4016.35:40-0.55:382.03:216:18New Moon24Fri
25Sat12:1814.76:11-1.06:072.33:196:20New Moon25Sat
26Sun12:0716.512:5114.56:42-1.16:362.83:166:22New Moon26Sun
27Mon12:3516.41:2614.27:14-1.17:063.33:146:24Waxing Crescent27Mon
28Tue1:0416.12:0313.67:48-0.77:373.93:126:26Waxing Crescent28Tue
29Wed1:3615.72:4412.98:26-0.28:134.63:096:28Waxing Crescent29Wed
30Thu2:1315.13:3212.19:100.48:575.23:076:30Waxing Crescent30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9451439)

Common Questions About Petersburg, AK Tides

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What time does the tide turn (slack tide) in Petersburg, AK today?

Slack tide in Petersburg, AK is approximately 8:07 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Petersburg, AK?

Petersburg, AK is currently in a spring phase. Tonight's moon is 83% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Petersburg, AK tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Petersburg, AK?

Tide predictions for Petersburg, AK come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Petersburg, AK?

Tide data for Petersburg, AK is sourced from NOAA Station #9451439. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9451439.

What is the moon phase in Petersburg, AK tonight?

Tonight the moon over Petersburg, AK is Waxing Gibbous (83% illuminated). This places Petersburg, AK in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA